Half to lewis emery



(No ModL) E. B. WHITMORE.

DUST GOLLEGTOE.

No. 573,837. Patented Dec. 22, 1896.

I JIM/anion WI/WQ/eaa a5 UNITED STATES PATENT OFFICE.

EDIVIN B. VVHITMORE, OF THREE RIVERS, MICHIGAN, ASSIGNOR OF ONE- HALF TO LEWIS EMERY, JR, OF SAME PLACE.

DUST-COLLECTOR.

SPECIFICATION forming part of Letters Patent No. 573,837, dated December 22, 1896.

Application filed February 18, 1896. Serial N0. 579,693. (No model.) I

- To ctZZ whom it may concern.

Be it known that I, EDWIN B. WHITMORE, a citizen of the United States, residing at Three Rivers, in the county of St. Joseph and State of Michigan, have invented certain new and useful Improvements in Dust-Collectors, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention belongs to that class of dustcollectors in which the air is strained through the meshes of the cloth tubes, commonly known as tubular dust-collectors.

The invention consists in the peculiar construction of the mechanism for beating or shaking the cloth tubes for the purpose of freeing them from the dust which adheres thereto as the air is strained through, and particularly in the construction, arrangement, and combination of the various parts, as more fully hereinafter described.

In the drawings, Figure 1 is a vertical central diagram section through a dust-collector of known construction, showing my invention applied thereto. Fig. 2 is a similar enlarged section through one of the tubes. Fig. 3 is a horizontal section, enlarged, through one of the tubes, showing in plan a portion of the traveling frame. Fig. dis aperspective illustrating a slightly-modified form of my invention.

A represents the outer casing of the dustcollector, which at the top has the chamber B and at the bottom the hopper C. I have indicated at D a fan for delivering the dustladen air into the chalnberB and at E an exit for the purified air.

F and F are two heads in the casing-aperture, and G are a series of textile tubes secured in these apertures at top and bottom and stretched between the same openings, respectively, at their upper and lower ends into the chambers B and O. The operation of these parts is well known. The dust-laden airbeing delivered into chamber 13 will pass through the tubes, and the air, straining through the tubes laterally, will find exit through the pipe E, while the dust adhering to the sides of the tubes will drop into the hopper O and may be conveyed away to any desired point. It has been exceedingly difficult to devise a means for cleaning these tubes which was at once simple and effective at all points in the tube and which would not wear out cloth rapidly.

My construction overcomes some of the 0bjections which have existed to devices heretofore in use, and I usually have constructed it as follows: Centrally within the tubes I have suspended (the two ends being secured) a spiral wire I-I, preferably of less diameter, so as to hang free from the sides of the tube. I is a frame which is moved up and down in the air-chamber J around the tubes. The means for moving the frame up may conveniently be cords I, which pass over pulleys I to the outside of the casing. The frame will descend by its own weight. In this frame are the cross-bars K and L, forming rectangular apertures M around each tube and of somewhat less size than the tubes, so as to contract the tube at the point where the frame or eye of the frame embraces each tube. These eyes or openings are somewhat smaller than the diameter of the wire coil within, so that as the frame moves uptit will strike the edges of the coil, moving the coil slightly to one side at that point until it has passed, when the spring and the coil will cause it to straighten and lightly beat the cloth at that point. The result is that as the frame travels the tube will thus be lightly beaten its entire length and the dust elfectively cleaned therefrom. As the frames project into the path of the coil at four points, this beating takes place all around the tube, which aids materiallyin effecting the desired result. Instead of having the coil on the inside I may place it on the outside, as shown in Fig. 4, the result being the same, except that the heating is appliedfrom the outside instead of from within.

While I have shown a specific form of mech anism for actuating the beater or coil, I do not wish to be limited to such form, as it is evident without description that various modifications of this actuating device may be used.

lVhat I claim as my invention is- 1. In a tubular dust-collector, the combination with the textile tubes of a spiral beater therefor beside the same, and a traveling frame adapted to actuate said beater in its movement.

2. In a tubular d List-collector the combination with the textile tube of means for cleaning the same, consisting of a resilient frame beside the tube, and a traveling frame adapted to strike and cause the frame to beat or shake the tube.

3. In a tubular dust-collector, the combination with the textile tubes of resilient spirals supported concentrically in relation to each tube and a traveling frame having cross-bars adapted to strike the spirals in its movement, substantially as described.

4. In a tubular dust-collector, the combination with the textile tubes of resilient spirals suspended by their ends Within each tube EDWIN B. WIIITMORE. Witnesses:

M. B. ODOGHERTY, O. F. BARTHEL. 

